Strain relief nut



FIG. 1 is a perspective view of my new, original, and ornamental designfor a strain relief nut;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front side plan view thereof;

FIG. 4 is a left side plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top plan view thereof.

The ornamental design for a strain relief nut, substantially as shown.